I have the book. It contains mediocre pictoral presentations of the five element fists (no applications) , a five element katana that doesn't seem to present much more than how you would intuitively wield a sword without any training, and drawings a figure doing xingyi bayonet routines. Actually his xingyi article on the sight probably covers everything he presents on the xingyi bayonet right there. It is a nice classical reference to have I guess though